OT redhat.com uses an invalid security certificate.

[Vandaman]

Accessing https://redhat.com/mailman/listinfo gives

Secure Connection Failed

redhat.com uses an invalid security certificate.

The certificate is only valid for www.redhat.com.

(Error code: ssl_error_bad_cert_domain)

    * This could be a problem with the server's configuration, 
or it could be someone trying to impersonate the server.

    * If you have connected to this server successfully in the past, 
the error may be temporary, and you can try again later.

Or you can add an exception…

Regards,
Vandaman.